Polyester modification Glycol side
PET Homo-Polymer
PETG CHDM-based
PETG NPG-based
O
O
O
O
O
O
C O
O
O
O
C O
O
CH 3
[ n
[ CH 2 CH 2 O C
[ m
[ CH 2
[ CH 2 CH 2 O C
[ m
[ CH 2 -C- CH 2 O C
[ n
[ m
[ CH 2 CH 2 O C
C [ n
[ CH 2 CH 2 O C
CH 2 O-C
C-O
C-O
C-O
NPG CH 3
TPA
EG
CHDM TPA
EG
TPA
EG
TPA
TPA
TPA
EG
Applications Copolyester for 5gl water bottles replacing PC Amorphous PETG PCTG, injection moulding resins
% of modification
approx. 3% >20% >30%
Adding CHDM or NPG, while reducing MEG
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